JIS standard

Standard            

Grade                                                                                  

Uses                                                                          

Sizes

JIS G3429

STH38, STH55, STH67

Seamless Steel Tubes in High Pressure Gas Cylinder

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JIS G3439

STO-G, STO-H, STO-J, STO-N, STO-C, STO-D, STO-E

Seamless Steel Oil Well, Casing, Tubing and Drill Pipe

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JIS G3441

SCr 420TK, SCM415TK, SCM418TK, SCM420TK, 

SCM430TK, SCM435TK, SCM440TK

Alloy Steel Tubes for General Structural Purpose

21.7-1016.0mm

JIS G3444

STK 30, STK 41, STK 50, STK 51, STK 55

Carbon Steel Pipe for General Structural Purpose

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JIS G3445

STKM11A,STKM12A, STKM12B, STKM12C, STKM13A, 

STKM13B, STKM13C, STKMI4A, STKM14B, STKM14C, STKM15A, 

STKM18C, STKM16A, STKM18C, STKM17A, STKM17C, STKM18A,

 STKM18B, STKM18C

Carbon Steel Tubes for Machine Structural Purposes

10.5-660.4 mm

JIS G3454 

STPG 38, STPG 42

Carbon Steel Pipes for Pressure Service

10.5-660.4 mm

JIS G3455

STS 38, STS 42, STS 49

Carbon Steel Pipes for High Pressure Service

10.5-660.4 mm

JIS G3456

STPT 38, STPT 42, STPT 49

Carbon Steel Pipes for High Temperature Service

10.5-660.4 mm

JIS G3458

STPA 12, STPA 20, STPA 22, 

STPA 23, STPA 24, STPA 25, STPA 26

Alloy Steel Pipes for Service

10.5-660.4 mm

JIS G3460

STPL 39, STPL 46, STPL 70

Steel Pipes for Low Temperature Service

15.9-139.8 mm

JIS G3461

STB 35, STB 42, STB 52

Carbon Steel Boiler and Heat Exchanger Tubes

15.9-139.8 mm

JIS G3462

STBAl2, STBAM, STBA20, STBA22, 

STBA23, STBA24, STBA25, STEA26

Alloy Steel Boiler and Heat Exchanger Tubes

15.9-139.8 mm

JIS G3464

STBL 39, STBL46, STBL 70

Steel Heat Exchanger Tubes for Low Temperature Service

15.9-139.8 mm

JIS G3465

STM-055, STM-C65, STM-R60, STM-1170, STM-1180, STM-R85

Seamless Steel Tubes for Drilling

Casing: 43-142mm / Hollow Pipes: 34-180mm / 

Drilling:33.5-50mm

JIS G3467

STF 42, STFAl2, STFA22, STFA23, 5TFA24, STFA23, STFA26

Steel Tubes for Fired Heater

60.5-267.4mm